The engines are volkspares units, built by chimps in south london !
But hey ! you get what you pay for !
If you want a proper engine then go to someone like TSR, but you'll pay for their expertise. Otherwise it's the Volkspares lottery.>>>>>> you may get a good engine. (and your lottery numbers may come up too) ! I've seen aircooled lumps leaking oil badly as soon as we started them, and they all breath badly too, i bought a book, read it then rebuilt my own and it was fine !!!!!
When BBT were independant back in my old Bug days they were superb, now they've gone corperate, your not a customer anymore just a number on a computer and the counter is manned by no hopers, i got more help on my wifes Audi at halfords

!!!!!!!!!